Exercise logic.propositional.dnf

Description
Proposition to DNF

Derivation

Final term is not finished

q || (T /\ r) || ~(T /\ (q -> r))

⇒ logic.propositional.truezeroand

q || (T /\ r) || ~(q -> r)

⇒ logic.propositional.defimpl

q || (T /\ r) || ~(~q || r)